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J. H. DILKS SWITCH OPERATING MECHANISM Sept. 18, 1928. 1,685,069

Filed June 12, 1924 7 Sheets-Sheet 1 O 6 O o Y O jv wcroz ovw- \fo lz/z/5 Zw nqys. I M

Sept. 18, 1928. 1,685,069

J. H. DILKS SWITCH OPERATING MECHANI SM Filed June 12, 1924 eats-Sheet 2Sept. 18, 1928.-

III

J. H. DILKS SWITCH OPERATING MECHANISM VIN- Eiled June 12, 1924 '7Sheets-Sheet 3 Se t. 18, 1928. 1,685,069

J. H. DILKS 4 SWITCH PPERATING MECHANISM Filed June 12, 1924 7 snet's-sneez 4- Sept. 18, 192a 1,685,069

J. H. DILKS SWITCH OPERATING MECHANISM Filed June 12, 1924 '1Sheets-Sheet 5 Sept. 18, 1928. 1 ,685,069

J. H. DILKS SWITCH OPERATING MECHANISM Filed June 12, 1924 7Sheets-Sheet 6 Patented Sept. 18, 1928.

UNITED STATES PATENT OFFECE.

JOHN H. DILKS, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO ELECTRIC POWEREQUIPISIENT COBPORATION, OF PHILADELFHIA, IENNSYLVANIA, A CORPORA- TIONo'F PENNSYLVANIA.

SWITCH-OPERATING MECHANISM.

Application filed Jun: 12,

My invention relates to'swibches for electrical circuits, havingparticularrelation to means for controlling theoperationthereof.

()ne object of my invention is to provide simnle and eili'cient means,whereby apparatus of the class described may be operated at will from aremote point. Y

Another ()lJjOClI'Of-ID)"lZlVeiltlDn )S to provirle electricalineansrfor operating a highvoltage s witch,- said electrical; meansbeing automatically :renderecl inefiective wnen the switch has movedfrom one operative position to another, together with a systern=ofremote control including means for inclicatmg theposition of the switch.4

A further object of my invention is'to-provide a system of control-foradriving motor, which causes tlieiiiopration'of s'aitldrivlng motorafter-a predetermined'range of movement thereof and which: substantiallysimultaneously causes the application of braking means-to avoidovertravel of the'd'riving rn'otor. V i

Astill flirtlicllObjdtjOf myin'vention-is to =1 mvid'e' an electrical'sj"s tem-'includiiiga -mo-' f tor; rie'rgizii'ig circuit therefor'yarelay for controlling dcirciiit, alll'lhlimlt sw tch oparable to open and to-close 's'ziid circuit after a predeterminedrange 'of motor movementto cause the operation ofsaidr'ela'yf 3 l A still further objeetoflnjinv'ention is to provide-a syst-m of control ji'yliich includes a)li!1f:.lit}: 0ff0nmli 'swit'ches togther with a switch forrenderinccl'tain of-"sa'id control .ches operative; epe ncling u p'oi'itlIQPOSl- 192-1. Serial No. 719,677.

crgizing circuit when said motor has moverl througha predeterminedrange; a plurality 01'' indicating means; and a switch actuated inaccordance with the movement of said limit switch for successivelyenergizing said plurality of indicating means.

A still further object of my invention is to provide a switchconstruction, wherein the moi-able contacts are caused to snap from oneposition: to'another: under action of energy which is stored-while theswitchis at rest.

A still =further object of my invention is to provide a switchconstruction, wherein the movable switch contacts may be positivelymoved from-one locked position toanother, the switch construction beingfurthercharacterized by certainother desirable features hereinafter :setf0rth. V

O thei-lobjects anclapplications of my invntion as well as details ofconstruction and operation, -whereby-my invention may bepracticec'lfwill be apparent, inore fully hereinaiterfrom-the followingdescription and claims when taken in connection with theaccompanyingdrawings -wherein, I Figd is a sicl'eelevati'o'nal view'ofone form of embodiment ofmy'inventioni I ig; 2isa=detailside elevationa1 view, pa:-

only :in section; of" certain: portions of the sw:tcha'ctuatingmechanism of Frg; 1

Fig.:3 i s':rtransverse sectional view taken on theline 3-3 of Fig; 2;

Fig I3 taken on Fig. 6 is an end elevational view of the switchmeehanismshown in Fig.3;

Fig. 7. is a s'ideelevati'onal view,- partly in section of the structureof'Fig. 6';

Fig. 8 isla transverse sectional viewtaken on the line'88 of-Fig. 7;:

Figs. 9. and 10- are similar views taken respectively on the lines 9- 9and 10'10 of FiL'.'7 :1-

A 11 is n tlctail-longitudinal sectional Iviewof the stationnrvandmovable switch elements; thesectional plane beingtaken on the line 1111of Fig.6}

Fig. 12 is a similar View showing the manner of mounting the contactsupporting rings 311(12):.- has been moved to; disengage theof thecasi11g ;51: may lie-closed by a. remo\-'-:-.;

- ona tower-=12. (F ig. 1) comprising vertieal- 51. A rod 55extendsmlownwardlykfrom the ;lye \tending members14and15 which-are se--.lower-endijofi-the oorej member 48 and it ad after.

on he switch a rms, the sectional plane being lower ends of the brakediscs 35 and 3G a re n- (alien on the line 1f212 of Fig. 6; andterconnected by a toggle-joint 43 adapted to Fig: 131'said'iagran'unatic, view of circnit-s be actuated by alink 44, which issecured to and. apparatus embodying myinvention. a pivoted lever 45movable in avertieal plane, For purposes of illustration, I have shownwhereby the brake bands 35 and 36 may be a pra ti al embodimentof myinvention, as actuated outofgengagement with the brake applie'cl to theopeirationof a high-\-'oltage disk 34 against theilforc "offf l 'c" spi'i ng 39 switch 1 'ofthe type disclosed in Patent No. when the 1notorj9isto mo-- freeiy. 1,415.708 wanted May 9, 1922, to R. Renhe. The brakcielcasinglever45finav be ac- In generaf the switch therein disclosedeomtuatecl by means of a master relay 46 (Fig. 5)

prises a pair of pivotally mounted insulators which comprises acylindrically formed ac- 2 and 3 (Fig. 1) carrying cooperating eontuzltng;-\i'i i a;rl ng- 4 7 and a core member 45 tact elements 4 and 5movable in parallel movable axially thereof. A secondary aeplanes intoandout of engagement under the 'tu ating winding-49' encircles theactuating reciprocal movement of linkage tiywhicli ter- Winding; 4'7 andit is designedto actuate the minutes in a common vertically movableshaft movable core 48 when the. actuating winding 7, as set forth in thepatent in question. :The 47 is clcenergized; as set forth hereinafter.The shaft '7 maybe sueccssh-"ely actuated to open actuating winding 47and49'as well as the and to close the switch L by:means of adriv-1.11iovablecore member 48 are enclosed by a ca ing motor. 9- ig. 2)through intermittently ing 51 ofmagnetic material, the latter havingactuating:mechanism 11, or directly by hand -:-1 perforation-52inthe-basethereoif for the. operation. .when a clutch. lever 75 (Figs;1- m0vable core-member- 48. The top pore; n

driving motor 9 .fromzthe associated mech-.able.cover53.-flThe'core-memben 48,may be .a-nismz 11-, all aswillappear morelfull' hereinsnpported insitsiloweriposition one project-Y Ting-end portion of'a=member=54awhieh is de- -;The s witchmechanism-1;'may bemountedtaehably securedaon tlienbase of :the casing eurediin'spaced relation byntransvemely'ex-x:jnstablykcarries tlieritree; endofgthe brake tending-members 17.;Ea-nd 18. :The spaced;releasing-lerelt45;;whereby:the latter 'nay be members 917;; and 18:provide: a rigid support move'diln: aecordanceiwifilnthewertiealmovefor{ a eancasinm 19;hajvin. ansinte ral base-i men-tof=theicorememberi48.; 1 t i D h D a portion 20 and a removable.eoverportion 21- ;.=-;'l he' eovengmembert 5.3; .ofthe casing .51 .is

to provide; aclosecl compalitm'ent. for the: in-- f-prqyided'with an alial'plojction 56 ex e d- .termrttent-ly aetuat-inmgearingyll. The momginto thebase of the magnetizing winding tor 9 is mounted on ai braeket22;lwn1ch 1s se-:;- 47;, said project on;56 being provided w th an curedto a, wall 230itheg'ean casinglt), andiaxial pl'ioration j57 a dapted-vto -s lirlably;1rc

A shaft- 25 i of the-motor ,9; carries va. flanged coliz aictzmemberl5494. ,-';The jeonta'ct member; 59

hub portion 26 (Figada-ptod atmengage a; land thest-emifigreiinsnlatingly:supported-in correspondinglyrecessedbrakedisk 27Whicll= their; lower:posifiion by af base; member 6'1 is rigidlyi'S'BQured-on-one endofia ,WOrinshaft which is mounted on spncing bGQTaQfL- 1: 2-8,; Woringshafi-28 is journalediniabe'aringz, 63 secjuredto theitopiside of th ecover mem- 29 formed in thesidevivall 23of-thfegear c3S-;: [Fol-153 A:PifiniQi:Stationany eontact ,mem-

ing.;19 and ;al so.in spaded-be'aring's 31 and 32; hers: 34:Tandifiiareg-mounteddirectly above extending from the baseportion 20 ofthe ear; the cooperating movable-conta t memb r 59 ,casing, {a; worm 33being keyed on the'por-J on; spring members 66} and :67, respectively,-

tion of the worm shaft= 28= intermec.iate the;.wliich are'secured to theinstilatingbase bearing 31 an (l32.- e '2 ..jmelnbee61,whereby.agieisticalmovement of In orderjofavoid-overtravel of the motor 9;theeontact memberfiQmaycause the stationwhenthe-highvoltage-switch 1 hasbeen acryzontact membe ffifilr and 65 to be electrituated toteiti'ir" ofits positions',;I provide aca y cd. vThevertieal movement of a brakestructure 34, of which the brake disk the contact member 9'may be.effected by .27 is one element and a pair of brake bands immov b i Qlfeembert 48, Wind! g fi 35 and-36 constitutethe cooperating elements. thew -en (lithe e 53Wh8n either Of The brakebands 35-and 36' have theirupper: h n g- Willdlngs is f ends pivot-ally mounted on pins 37 and'38,g d- T .eiiectr s er-o 'fl il respectively; which are carried bythc'side t f 9 g e g' wi or wall 23 ofthelgear casing 19. The bral e 15t Cause l' 9 the hands 35- and-36min?be'normally actuated @0176 member48,5Wl1ich ul t closing into resilient engagement-with the brake disk ofthe 3 n the Simultaneous release nca'ng an'adjnstable spring ex.tllBf-bl'ZL-k'l thefmotor 9 l0 1?- tending between projections 41 and 42of the ,volve freely. brake bands 35 and 36, respectively. The The worm(Figsfland 3) is actuated by the driving motor 9 and meshes with aWormwheel 6&5 which is revolubly mounted on a shaft 69 journaled inbearings 71 and-72 formed in the base. and the cover portions '77 of thegear casing 19. The handle 75 may be locked in a desircdposition, asshown at 78- (Fig. 1). The inner end of the shaft 76 carries a cam 79which engages one end of a clutch. lever 81 pivoted at 82 to the base 20o'i'the gear casing 19.-J-'1he. other end of the pivoted clutchleverz8l: terminates in a yoke portion having fingers 83 and 84 adaptedto engage a slot 852 formed-in:arr-annular clutch disc 86. 1. -I -i-:

The clutch disc86'carries-pins 7 and 88" which are adapted to removablyengage com--v plementary pairs'oi'borings89 -91iand 92--f 93 formed'inthe womr-vvheel 68 andthe gearwheel 73, respectivelyWhenwthe-clutch-re-:.

" leasing handle 75 is so moved as toLcause-the cam 79'to actaa'te thepivoted 'cliitch lever'81,.

the pins 87 and 88 are actuat d' out oftheborings 92.and 93-'irr the;gear-wheel-73; so

that-the operative connection between the-lat- F application of thebraking apparatus 34 to .the finalrsto'pping of the motor 9,,fr omcauster and the worm-wheel. 68 is broken-" The resulting lateralmovement-pf-the clutcli-disc 86 is resisted by a spring 9ythe opposit eends' of which engage a plate-1 95 carried-by a progz vjcctin'g-hul)portion 96 ofthe worm-Wheel 68; and a flange 97 extending inwardly from;the inner surfaceof the clutch disefior Relativerotative movementbetween-' theiplate 95 and r the hub'96 may be avoided by means of a-pln98,- 1' 5';

In order-to insure that-the-worm-wheel 68-: will imake a complete turnbefore the fpinsx87 a and 88 are actuated'into engagement witlrthe'borings 92 and 93' ofthe gear-iw'heel 73,- underlit ' 0f theci-anlcshaft'l0l and it is operatively theaction ofthe'spring 94,I'spacethe. same at different radial distances fi'omtheshaft and SS'Werespaced equallyifrorn'theshaft) 69,

wheel 73 and 'the" motor-9 would be efiectedwhen th e worm-wwheel 68'had turned through one-half a revolution onlyuw'll'he'gear-wheel 78which is actuatedbyu-the worm-wheel 68 through the operative connection:effected. bythe clutch pins 87 and 8S; meshes with. a gearwhecl 99. thelatter being keyed'on a crank-- shaft 101 journaled in "bearings 102and-103 formed in the base'and cover portions 20 and- 21 of the gearcasing 19, respectively. A' crank 104is keyed on an outer end portion105 associated by means of a link 106 with the lower end ofthe-vertically movable operating shaft 7. A bracket 107 extending fromthe top side of the gear casing 19 serves to provide a bearing 108 forthe lower end of the operating member 7.

Since it is desirable that the operating member 7 be intermittentlyactuated by the motor 9, the gear-heel 73 and 99- are so designed that acomplete rotation of the former causes a half rotation only of thelatter. One method of accomplishing this desired result is shown in Fig.2, wherein one-half of the pcriphcry of the gear-wheel 73 is formed topresent a smooth surface 111 having the diameter of the pitch circle ofthis gear-wheel. The co-acting gear-wheel 99 is provided withoppositely. positioned sinoothportions 11.2

and 113 which are similarly formed on the periphery thereofand adaptedtoengage successively the smooth portion-1110f the gearwheel 68. 1

. The smoothpor-tions 1-11 112 and 113 are so designed that the'teetlrof the gear-wheel 73 engage the teeth ofi th e gear-wheel 99 forone-half 'arevolution only; the smooth surface 111ofthe'gear-wheel73-engaging one or the other of the smooth portions 112and 113 of .the-ge'arjovheel 99 folr the remaining half of. therevolution, vherebyithe; gear wheel 73=-may turn ffreelyi-for one-halfof-a revolution; Thisf isFof; particular importance inasmuch-as-.-it--preventsthe over-travel of. the motorE-9,= froni. theinstantof the ing the operation of 'the;- switch-actuating shaft/7 ,1,The crank is; so mountedon the either it's-open or closed T hehigh-voltage switch 1 may beinanual- 11y operated subsequent tothe-actuation of ithelclutch-release handle 75; by-an operating handle(not show-n);'which-is;adapted; to engage spaced pins-1 14 mounted onthe outer end'of an extension.- 115 iofithe driving shaft 69.-:The-extension:115;of the-shaft .69 may be enclosed byarousing;'116:constituting an integral projecting portion of theremovable cover 21.' Access'm'ay be had to the clutch pins 1 14 throughthe casing116 by providing; an opening 117 in the outer end thereof,which may be closed by a hinged cap 118 adapted to be locked; as at-119.

Since it is desirable that the (11" ing motor 9 actuate the high-voltageswitch 1 just long enough to cause the same to move from one operativeposition to another, it becomes necessary to render the motor 9automatically inoperative upon the completion of such movenia To this enI provide a el form f ill! lot:

limit switch 121 (Fig. 13) which operates substantiallyinstantaneouslyto open and to close a motor energizing circuit 122. limit switch 121 aswell as switches 123 and 124, which control remote control circuits tobe described hereinafter, are embodied in a single switch structure 125which is so mounted on the projecting portion 115 of the shaft 69 as tobe enclosed by the casing 116.

As shown in Figs. 3 and 6 to 12, inclusive, the switch construct-ion 125comprises a stationary contact-carrying structure 126, a movablecontact-carrying structure 127 and mechanisn'i 12S adapted to cause thesuccessive actuation of the mbvable structure 127. The stationarycontact-carrying structure 126 comprises a base portion 129. which isadapted to be secured to an outer face portion 130 (Fig. 3) of the gearcover 215and a tubular portion 131 which extends from the center of thebase portion 129 axially of theshaft extension 115 and loosely engagesthe same. A plurality of contact-.

supporting arms-132 133, 134 and 135 extend from the outer-edge'of thebase portion 12-9 axially of the tubularportion 1.31and they are spacedequiangularly about the same as acenter.

The contact-supporting-arm 132 (Fig. 11)

may be providerbwith spaced perforations- 137, 133 aiid'139. which areadapted to receive f insulating bushings 141,-the latter provid ng--insulating mountings for the stem portions 142 of- 'stationary contactelements 143,144

and 145. The stern portion 142 of each Sta-.-

tionary'co ntact element terminates'at one endin' a hea'd' portion 146having a beveled." contact-engaging face insulating block-148 is soformed as to provide an insu-" 'lating mounting for the headportion llfi'ofiv stored energy; Icoinprisesfa ratchet-wheel 187 .whiclris.rigidly mountedon the outer .end of the several stationary contact.elements whereby the same may be ipsnlati igly supported imposition;"The otlier end=-:of.tl1e..

stem portions 142 of the stationary contact elements extends through'and'beyond' the arm 132. each end portion being-threaded to" receiveclamping nuts 149.-- The several nutsl49'are insul'atingly spaced -fromthe support-'- ing arms 1 32 by means of a member 151. -A- second nut152 may be mounted 'on the threaded end of each stationarycontactelement whereby an electric conductor may secured thereto. 5Similarly, the arms 133, 134 and 135 are respectively provided withstationary contact.

elenients 15315415; 1561 57".158,.and 159-,1 61 -162, all as shownmoreiparticnlan ly in F ig, 13 to be described niorefully hereinat'teri"Since the stationary-contact elements 1 l5-155158162 liein-a commonnlane transverse to the axis of the actuating limit-switch 121.Similarly, the contact ole- The :gages a second tubular member 164, thelatter being loosely mounted on the tubular projecting portion 131 ofthe stationary switch struc-- ture 126.: The tubular member 163 isprovided with laterally extending flange portions.165, 166, 167 and- 1688). The outer end of each flange is threaded to receive one end of athreaded rod 169 which extends longitudinally of the actuating shaft115. Eachrod is provided with an insulating bushmg 171, whereby aplurality of rings 172, 17 3 and 174 may be'insulat-ingly supportedthereon, as shown in Fig. 12. The several rings'are secured in spacedrelation by tubular insulating elements 175 and the wholeis rigidlyclamped in'position by means of nuts 176 mounted on the outer threadedend portion of the several supporting-rods 1.69. The ring 174 is formedwith a-zpair of integral casings -178Iandi179;:whereby contact elements181 and 182, respectively,.may be resiliently and removablyi supportedtherein.v The elements i=l81 and-l82 constitute-the movable contact 2183%184and185-1-186-constituting the movable contact elementsofthe-switches123 and 124; respectively; 1 nThe. mechanism 128.- whichintermitten tly operateshni-the aim-m switch: structure 127 Ito cause;at tho move from one: contact-engaging position; to; another.- under theaction f Tthe tnbularmember -164,;as byalocking screw at 188 (Fig. 10).The end of the actuating shaft 115adjacent ithereto rigidly carries an"arm- 189 (Figs) :on: the outer end of which is resrhent-lymounted a;p'aavlalQO adapted to en- =gageithe ratcheflwheell 187* and to move thesame aswell as the tubular sleeve 164. A- cam 191, which is mountedon'the outer end .of-

the tubular projection 131 carried by the stationary switch. structure,-126, serves .to disengage the-pawl 199 from the ratchet-wheel -=18'T"Nvhen the extension shaft 115 has moved through apredetermined angle..--The relative rotation obtaining hetween'the ratcheth 187 and themovable switch structure 127 may be :utilized-toustore energy in aspring 192 (Fig. 7-) which interconnects the two. whereby the movableswitch structure 127 may beposit-ivelyactuated under the force of thespring 192indeplendently of .the actuating shaft115. i':

In order to release the-energy, which is st ed in thespringxlnringtliczeried 0f Inn the other. The base portion 129 of thestationary switch structure 126 is provided with a ilurality ofequiangularly positioned retaining flanges 197, 198,-199 and 201 adaptedto cngage'successively the locking shoulders 195 and 196 of theeccentric-strap 194 as the latter is moved under the force of the spring192. The movable switch structure 127 is operativcly associated with theeccentric-strap 194 by means of a lug 202 which extends from theeccentric'strap 19-l into a slot 203 formed between the flange portions167 and 168 of the movable structure 127.

In order to insure a rotative movement of the eccentricstrizp 194:sufficient to actuate the movable contact elements out of engagementwith the stationary contact elements, when the eccentric-strap shoulders195 and 196 have been "actuated clear of the retaining flange 197,- inevent of theinoperation of the spring192, the eccentric 193 andeccentricstrap 194 areprovided--wit-h cooperating shoulder portions 204and 2-05 (Fig. 9), respectively, so thatzthe eccentric-strap 194 ispositively actuated by the actuating shaft 115 through the pawl andratchet construction 187-191. S'uchact-uatiomhowever, is discontinuedwhen the movable-contact ele-' ments 181 and 1820f the limit switch 121have been actuated clear oft-he'cooperating stationary-contact elements,as will appear more fully'l'iereinafter.'

As the actuating'shaft 115 is-turned through one complete revolution,the pawl 190 engages thc'ratchet-wheel 187 causing-the same to turnandwind up the=spring 192. The-movemento'f-the ratchet wheel 187,however, simultaneo'us'ly causes a corresponding movement of theeccentric 193, resulting in a lateral movement ofthe eccentric-strapshoulders 195' *and'- 196. When the ratchet-wheel- 187 has moved throughsuch angle as toestablish thedesired force in the spring 192, theshoulders 195 and 196 have been moved clear of theretaining flange 197,permitting the eceentric strap 194 to turn rapidly under the action'ofthestrained spring 192, carrying with it the movable switch structure127 whichis operativ ely associatedtherewith by means of the-lug 202.

Since the eccentric. 193 is prevented from following the movement oftheeceentric-strap 195 is just actuated clear of the retaining flange197 to the maximum value obtaining when the shoulder 195 engages thesucceeding flange 198. Hence, as the eccentric shoulder 195 is movedfrom the retaining flange 197 to the next succeeding retaining flange198, it is moved outwardly and finally engages the latter.

The cum 191 is so dcsigned that, when the eccentric shoulder 195 engagesthe locking flange 198, the pawl 190 is actuated clear of theratchet-wheel 187, thereby releasing the opposite end of the spring 192.The etl'ect of releasing this end of the spring 192 is to cause theeccentric 193 to move in the opposite direction forcing theeccentric-:-;trap 194 radially outwardly until the locking flange 198 isfully engaged by both of the eccentric' strap shoulders 195 and 196.-The' reverse movement of the eccentric 193 is limited by a pair ofcooperating shoulder-S206 and 207 formedon the eccentric strap-19 i andthe eccentric 193, respectively, whereby tension-is maintained on thespring 192 at all times.

When the shaft/ 115 is moved through an other complete turn, theforegoing cycle-of operation is repeated; so that the'movable switchstructure 127 1 nay be successively actu ated from oneoperative'positio'n'to another for each complete turn or theactuatingshaft 115. Attention is directedtoth'e'factthat the movement of theswitch" structure 1% from one operativeplos'ition: to another isveryrapid, being ineffect a snappingfrom one pos tion-to anotherl Ashereinabove pointed out, should the spring-192' fail to move themovablfeleontacts from anyone circuit e'losing position, the shoulder204 of the eccentric 193 engages the" shoulder 205 on th eccentricstrap19s and, under the action of the actuati1 2 '$liaft '-1 15, positivelymoves the movable 'swit'c'hstructure 127 out of the circuit-closing i ifi' Referring to the diagrammatic embodiment, of myinvent-ion shown inFig. 13, the'driving motor 9 is connected by conductors 208 and 209',which constitutethe previously-noted motor-energizing-circuit 122,- tothe positive and negative bus conductors 211 and 212 re- 'spectively ofa 'glistantlv' located; contro'l bns 213. The conductor 209' includesinseriesci'rcuit'rlat-ion the master relay 426 shown in Fig: 5 as-wellas' the' a'ctuating winding-47 thereof, so that the movablec'ontactelement 59 may be held in 'its'circuitfclosing position whehwinding-47 is energized. The conductor .209 also includes-the limitswitch .121,-.the stationary contact elements.145-155 and 158162thereofbeing connected, respectively. by jumpers 214 and 215 (Fig. 6).

The operation ofthe movab e contact elements 181 and 182 of the limitswitch 121, as the same are moved from one operative position toanother, is merely to open and to close instantaneously the motorenergizingcircuit 122. This instantaneous opening and closing of themotor-energizing circuit 122, however, is sufficient to cause thedeenergizaton of the actuating winding 17 of the master relay .46 and,as previously pointed out, results in the contact element 59 moving outof engagement with the stationary contact element 61- and to completelyinterrupt the motorenergizing circuit 122.

A system of remote control 216 for the master relay d6 coi'nprises aconductor 217 which extends from the conductor 208 throughthe actuatingwinding 19 to a jumper 218 of the switch 123, said jumper 218 connectingthe stationary contact elements 144 and 154 in parallel relation. Theremaining stationary contact elements 157 and 161 of this switch areconnected by conductors 219 and 221 through remote-control switches 222and 223, respectively, to a common conductor 22 1 electrically connectedto the bus conductor 212. The remote-control switches 222 and 223 may belocated at a distant operating station.

In order to indicate whether or not the high-VOltfl-g switch 1 is openor closed, I provide a pair of indicating lamps 225 and 226, which havecorresponding terminals 'connected by conductors-227 and 228 to the busconductors 212 and 211, respectively, the rem aining terminalsthereofbeingconnectedby conductors 229 and 231-, respectively, to acommon conductor 232 which terminates on a j-innper233 of the switch 12the .jumper 233 serving to connect in ,parallel relationthe stationarycontact "elements 156 and 159,. The remaining stationary contactelements 143 and 1530f this switch are connected by conductors 234 and23 5, "respectively, to the conduct0rs'208'and 209. h ,wWhen theremote-control switch 223 15 closed, a circuit 'is completedwhiehextends from the bus conductor 212 throughthe conductor 224, theremote-control switch 223, the conductor 221, the stationary ,andmovable contacts elements 157'-184,,l83144r of the switch. 123, theconductor 217, the energizing winding 49, andthe conductor 122 to thebus conductor211. The effect of closing thiscir cuit is, therefore, tocause; the core member 48 to actuate the movable switeh'elemeirt f fiinto engagement with the stationary-contact ele- Inent 64 and 6 5 tocomplete the motor-energizing circuit 122. I

The vertical movementof'the core member 48 incideritto the energizationofth'e actuat 'ingwinding.49'causes'the release ofthe brake mechanism'34, as previously pointed out,

whereby the motor-9 may revolve free of the same. The motor 9then-operates to turn the gear-Wheels 73 and 99. When the gear-wheel '73has moved through its effective portion of a revolution,'the'operatingshaft '7 has-been so moved as to actuate the high-voltage switch 1 fromone operative position to-another. 1 The gear-whcel fails to actuate thegear-wheel 99 during the remaining hall'- rerolntion by reason oftheengagenrent of the smooth surface 111 thereof with the smoothportions 112 or 113 of the gear-wheel 99. As the gear-Wheel 73 movesthrough its ctfective portion of a revolution, the pawl 1 engages theratchet-wheel 187 causing the twisting of the spring 192. This storageof energy in the spring 192continues until the high-voltage switchmechanism 1 has been moved from one operative position to another atwhich instant th'en'iovable contact elements of the switches 121, 122and 123 snap from engagen'ient with one set of stationarycontactelements into engagement with a su'cceeding set of stationarycont-actelements, as illustrated bythe solid and dotted lines, respectively, inFig. 13. The momentaryin terruption in the motor-energizing circuit-122renders ineffective the actuating winding/l7 with the result that themovable contact element 59 moves out of engagement with the stationarycontact elements 64 and (Soto completely interrupt the motor circuit122. The simultaneous dropping of the core 48 results in the applicationof the notor brake 34, so that the motor 9 is broughtto rest without anundesirable amount of overtravel.

The operation of the switch 123 from the solid line position to thedottedline position causes the remote control switch 222 to becomeoperative and the remote control switch 223 to become inoperative,inasmuch asthe conductor 221 now connected to a dead-end o-f'the switch123. Similarly, the operation of the switch 12% fromv the solid lineposition to the-dottedline position renders efiective the indicatingflamp 225 ;and the indicating 1331113226 ineffective. When the highvoltage switeh mechanism-1 is to be moved toits original-position, "theremote control switchi-222 is actuated- While 'I have shown only oneembodiment of my invention for purposes of describing the same andillustrating the;prineiples of construction and operationthere'ot, itis; apparent that various changes and modificationsmay be made thereinfwithout departing from thespirita nd scopegof fmy invention, and-Idesire, therefore,-that'only such limitations shall be imposed thereonasare indi cated' in the appended claims or as are demanded by the priorart;

I-claim-z r i i 1. In combination, a driven shaft,- a d-ri-ving shaft,'inechani'sm for so operatively -associa't-ing said drivenshaft andsaiddri-ving shaft that the former is intermittently actuat'ed, a clutchfor rendering ineffective-said mechanism, whereby said driven -sfha'ttmay 'be operated independently "of said drivin-g shaft, and limitswitch-actuated by said driving shaft.

2. Apparatus of the character describe d comprising a driving shaft, alimit switch operatively associated therewith, a driven shaft,intermittent gearing operatively associating said shafts, and a switchconnected to be actuated by said driven shaft.

3. Apparatus comprising a driving shaft having a gear wheel, a drivenshaft provided with gear wheel, said gear wheels being so formed thatone is intern'iittently actuated by the other, and a high voltage switchconnected to be actuated by said driven shaft.

4. Apparatus of the character described comprising driving means, aswitch to be actuated thereby, mechanism for operatively associatingsaid driving means and said switch including intermittent mechanism,whereby said driving means may have a maximum range of travelindependent of said switch, and a limit switch for controlling saiddriving means.

5. The combination with a high voltage switch to be actuated, of adriving motor, and means for operatively associating said motor and saidswitch comprising a Wormgear drive and intermittent gear-Wheel mechanismconnected to be actuated by said drive.

6. The combination with a high voltage switch to be actuated, of adriving motor, and means for operatively associating said motor and saidswitch comprising a worm-gear drive and intermittent gear-wheelmechanism connccted to be actuated by said drive, said drive and saidmechanism being interconnected by a clutch.

JOHN H. DILKS.

